Churn guard



Mc'h' 19, 1929. R, M BECKER 1,705,654

A GHURN GUARD Filed Dec. l5, 1928 'Al/@ i 31a/vento@ Illa Patented Mar. 19, 1929.

RIcHAR-n MARTIN BECKER, oF NIcoLLE'r, MINNESOTA. f

CHURN GUARD.

Application filed December 15, 1928. Serial No. 326,267.

This invention relates to guards for machinery andpertains particularly to a guard designed for use upon a rotary churn.

The primary object of the present invention is to provide a guard which may be shifted to a position in front of the cylinder Y of a rotary churn to prevent accidental contact therewith by an' attendant and which, when the churn has been stopped, maybe swung to a predetermined lowered Lposition which will permit the attendant to reach` the churn without fdiftculty.

Another object of the invention is to provide a swinging guard of the above described character having an improved sliding swinging connection with a fixedk Asupporting bracket which may be rigidly secured to a suitable fixed portionof the machine in association with which the guard is to be used.

Other objects of the invention are to provide a guard' which is of simple construction, designed to -be easilymounted in position, strong and durable and comparatively inexpensive to manufacture. I

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawing forming a part of the present invention with the understanding, however', that the invention is not confined to any strict conformity with the showing of the drawingbut may be changed or modified so long as such changes or modifications mark no material departure from the' salient features of the invention eX- pressed in the appended claims.

In the drawing:-- r l Figure 1 is a plan view of one end of a rotary cylinder churn showing theapplication thereto of a device embodying the present invention; y

, Figure 2 is a view in side elevation of one of the two guard bar supporting members mounted in position at one end of the churn;

Figure 3 is a sectional View taken longitudinally of the inner end of a supporting arm of the 4guard showing the detailed structure thereof;

line 4 4 of Figure y Referring to the drawing 1n detail wherein like numerals, of reference indicate corre-- spending parts throughout the several views, 4

there is shown a revolving churn, the body of which is in the form of a drum, as indicated by the numeral 1 of the type in assoby the connection of a suitable driving mech anism with a gear such as that indicated by i the numeral 8 :which ismounted at one end of the drum upon a trunnion.

In churns of this character at .present in use the guards employed are not shiftable and difficulty is therefore experienced by the vattendant of the churn in removing butter therefrom.

The present invention comprises a guard which is adapted to be lowered and consists of a pair of bifurcated brackets 9., the end portions 10 ofthe furcations each being arranged'in spacedprelation in the manner ,shown and designed to receive therebetween a pair of the flanges 4 andk 5 of the-bearing, the bolt 7 which holds these flanges together passing through :the ends of the furcations to maintain the bracket in forwardly extending substantially horizontal position.

Formed longitudinally of each bracket is a slot 11 and at the-free or forward. end thereof the top is.y provided with a number of notches 12. A

Associated with eachv ofthe brackcts) isa guard bar supporting arm13. Each of 'the arms 13 is longitudinally divided at itsvinner end forming the spaced parallel members 14 each of which carries an upwardly projecting semi-circular body 15.

Each of the arms 13 receives between its members 14' one of the brackets -9 and the members of each arm are connected at their` rear ends by a bolt or pin 16 which passes through the slot 11k of the adjacent bracket Figure l is a sectional view taken upon thev is normally positioned above the adjacent guard position it is first raised bracket so that when'the arm vis-'allowed to swing vdown the roller Q0 willv come to rest upon the top edge of the adjacent bracket. The arms 13, the outer ends of which are connected by the guard bar 20 which extends longitudinally of the face of the churn drum, when in this downwardly extending position support the Vguard bar across the lower part of the churn machine, thus permitting an attendant to havey free access to the interior thereof.

The members' 14; offeach arm adjacent their inner ends are provided with a series of transversely alined apertures 2l and eX- tending through one pair of alined apertures between the members is a bolt 22 which carries a sleeve 23.

l/Vhcn the guard bar is to be placed in until the pin or bolt 22 of each of the arms is swung upwardly past the outer end of the adjacent bracket 9 after which the guard bar and arms are shifted inwardly, the bolts 16 sliding in their respective slots ll until the pins land bushing 22and 23 are in a position to be lowered into one of the recesses l2 of the underlying bracket. The guard bar is then dropped until this positioning ofthe bushings 23 in the recess of the adjacent brackets. takes place following which the bar may be released and will remain in raised position vas will be understood.

While the foregoing description refers particularly to bifurcated brackets it will, of course, be understood that I -do not wish to be limited to the `detailed structure of the bracket as shown, forit is obvious that suitable brackets may be constructed of solid plate as well as from a member having a .pai-ref independent arms as shown. f

From Athe foregoing description ity will be readily understood that the guard bar embodying this invention may be easily and quickly lowered from upright position or raised thereto 'as desired with a minimum of effort.

Suitable adjustments may also be made through the provision of the plurality of 'apertures i8 and 2l so that the distance rvdownwardly to which the guard may be 's'wungmay' be regulated and the space between the guard bar vand the churn drum increased or decreased as desired.l

Having thus described my invention, vwhat Iclaim is l. Ashiftable guard support, comprising a rigidly mounted bracket, an arm, means vto provide a sliding pivotal connection between one end of said arm and said bracket, and means for coupling the arm with the bracket to maintain :the Asame. in substantially parallel relation thereto.

2. A shiftableguard support, 'comprising la rigidly mounted bracket, an arm, means to 'provide a sliding pivotal connection beto limit the movement of the arm in one direction.

3. A guard structure of the character described, comprising a pair of bracket members designed to be rigidly substantially horizontally supported, an arm member asy sociated with each of said brackets, a sliding pivotal connection between one end of eacharm and its associatedv bracket, a guard arm connecting the. other ends of the arms, vand means for pivotally connecting each arm intermediate its ends with its associate bracket to maintain the arms and guard bars in substantially the 'same plane as the brackets.

4. A guard structure of the character scribed, comprising a pairV of bracket members designed to be rigidly substantially .horizontally supported, an arm member associated with each of said brackets, a sliding pivotal connection between one end of each arm and its associate bracket, a guard vbar connecting the other ends of the arms,

means for pivotally connecting each arm intermediate its ends with vits associate bracket to maintain the arms and v.guard bars in substantially the samevplane as'the brackets, and means for limiting the down ward swinging movement of the arms Von their brackets. f 4

Y 5. A guard for a machine of the charac-ter described, comprising a pair of bracket members designed to be rigidly mounted in substantially horizontal position at "opposite 'sides of the'machine, each of said vbrackets having a longitudinally extending slot, an `arm member associated with-each bracket, a coupling pin between each arm and its bracket and slidably engaging in the slot thereof, a guard bar connecting the other ends of the bracket arms, and means for coupling the arms intermediate their ends with their respective brackets, when brought to a position substantially parallel therewith.

6. A guard for a machine of the character described, comprising a pair of `brackets each' having a longitudinal slot and each designed to be mounted in substantially horizontal position at opposite sides of the machine, arm members each associated with a bracket and having sliding pivotal connection at one end in the ,slot thereof, a pin member carried by each arm designed to rest in a receiving recess formed inthe 'top ofthe adjacent bracket, and a guard bar connecting said arms at their outer ends.

7. A guard for 'a machine of the character described, comprising a )pair of brackets each having a longitudinal slotand each designed to be mounted in substantiallyy horizontal position at opposite sides of the -machine, arm members each associated with a bracket and having slidingpivotal Aconnection at one endin the slot thereof, a pin member carried by each arm designed to rest in a receiving recess formed in the top of the adjacent bracket, a guard bar connecting said arms at their outer ends, and a movement limitingmemb'er carried byv eachofk said arms above the inner end .thereof for 10 engagement withy the adjacent bracket when', the arm is swung downwardly.` 1

In testimony whereof I hereunto aix my" signature.

Brennan MARTIN BECKER. 

